Egg-tester.



W. K. STEBBINS.

EGG TESTER.

APPLICATION FILED JAN. 28. 191s.

L09 1,778. v Patented Mar. 31, 1914.

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WALTER STEBBINS, O1 FAIR/MOUNT, NORTH DAKOTA.

EGG-TESTER.

Specification of Letters latent.

intenten' nait einem Application med January 28, 191B. SerallNo. 744,751.

Ithe egg to be tested is held before a brilliantA light in ordento render the same semitransparent, and the object of my invention is to provide a device by means ol which this may `be; readily accomplished.

A. further object of my invention is to provide an egg tester including a body hav.- ing an opening vin its top large enough to vpartially admit an egg but not large enough to permit the egg to pass through and provided interiorly with an electric light forilluminating the egg. Y

A further object et my invention is to so arrange the egg tester that the light will be lighted only when an egg is being tested.

llVith these and other objects in view, my invention will be more fully descril'ied, illustrated in the accompanying drawing. and( then specifically pointed out in the claims which are attached to and form a' part of this application.

ln the drawing: Figure 1 is a` perspective view of my improved egg tester: Fig. 2 is a central vertical sectional view of the same; Fig. 3 is a vdetail 'perspective view .of por- `tions of the tester removed trom the casing or body of the device.

Corresponding and like parts are referred to in the following description and indicated in all the views oli' the drawing by the same reference characters.

The preferred embodiment of my egg tester includes a body indicated as whole by the numeral 10 and comprising two tele seopic members 11 and 12, the tormer of which is closed at its upper end as at 1S, while the latter is closed at its lower end as ati-14%. Each ot these members is preferably formed of sheet metal and the members are preferably rectangular in shape to prevent turning movement of one with respect to the other.

rlhe closed upper end of the outer member 11 is provided centrally with an opening 15 of' such size as tofrjeceive an eggfwhlle at the same time small enough to prevent the passage oi: the egg into the casing, The lowerl or inner casing member forming the body is* proportioned to receive a, battery 16 made up oita plurality oit dry cells 17 oi the usual type employed in pocket flashlights and the like, one of these cells, namely, the central one, being shorter than the' othersa'nd provided at its upper end with an upwardly directed spring plate 18 forming one of the terminals of the battery. As usual, 'the cells each include a. casing of metal and in the present instance, this easing forms the other terminal of the battery. `'lChe battery as a Whole is preferably inclosed in a casing or covering l19 which lits Within the casing member 12 of the egg'tester and which is closed at its upper end by a cover 2O formed of metal, the covering 1f) being preferably formed oif`eardboard or other non-conducting material. This covering 19 is provided at one side with an opening 21 and the cover 20 is provided with a spring tongue 22 adapted, when the cover is in place, to extend through this opening and engage against one of the cells, whereby the cover 2O may serve as one terminal of the battery. This coverl 2O is further provided centrally with an opening 23 corresponding to the opening in the outer casing member 11.

The casing members 11 and 12 are normally supported in such a manner that the top 13 of the outer casing is spaced above the upper edge of the inner casing 12 as shown in Fig. 2 of the drawings, this being accomplished by helical springs 24 secured to the cover of the battery and bearing by their free ends against the lower tace of the closed end 13 ot the outer' easing.

Secured to the inner face of the closed end 13 ot the' outer easing, is a cup-shaped reflector 25 which in normal position extends `by its inner end through the opening 23 of the battery cover and this inner end is shaped and threaded to provide a. socket 26 for a small electric lamp 27. @ne terminal of the.

incandescent coil 2S et this lamp `is electricallyv connected through its plug with the socket 26 in the usual manner, while the opposite end is electrically connected to the plug 29 which carries a-downwardly de# pending helical spring 30.

As Will be readily apparent from the foregoing description, a downward pressure will mov'e the outer casing downwardly over .110 upon the closed end 13 Gof the body member` the inner casing to engage the free end of the spring 30 against the resilient terminal 18 of the battery and when this is done a circuit will be closed through the lamp, the current lpassing ,through the. contact 18, spring 30, lamp, 're-lector 25, casing member 11, springs 24, cover 20 and tongue 22 back to the battery; It will therefore be seen that if an egg be positioned with one end extending through the opening l5 and if the outer' wardly by the springs 28- to normally break the circuit and also so proportioned as to permit the outer casing to be forced downwardly a suiiicient distanceto close the circuit.

The above described eggvtester is simple and economical in construction and occupies but small space and because of the fact that the light is burning .only when the tester is inv use', the cost of batteries for operating the same will be small. tionl which is required to position the egg brings the hand of the operator directly in place to operate the device and light the lamp and the mere raising ofl the hand to remove the egg permits the springs 24 to separate the casing members and break the light circuit. I

It willof course be understood that'I do not wish in any way to limit myself to the specific details of construction illustrated in the drawing and describedl in the above specification as various minor changes may be made at any timewithoutin the slightest degree departing from the spirit of my in vention.

Having thus described the invention, -what is claimed as new is 1 1. An egg tester including relatively movable telescopic casings, one of which is prol vided with an opening, a reflector carrying an electric lamp mounted in the casing having the opening therein and arranged in alinement with said opening, and means operable by the movement of one casing toward the other for closing the circuit through said lamp.

2. An egg tester including relatively vInovable telescopic casings, one of which providedl with anl opening, a reiiector carrying an electric lamp mounted in the casing hav.- ing the opening therein and arranged in alinement with said opening, means operable by tlie movement bf one `casing toward the Moreover the same inof otherfor closing the circuit through said lamp, and means for normally holding the casings away from each other.

. 3. An egg tester including an inner casing member' and an outer caSingmember telescopically mounted with their outer ends closed, one of said ends being pro-vided with an opening, an electric lamp carried by the casing havingthcopening therein and, ar-- ranged 'in alinement with said openin gva means for normally holding .said casngs 1n slightly extended position, and means operable by the movement of one 'casing into-the'` other to close a circuit through the light.l

4. -An egg tester including an inner casing member, a battery of dry cells in the inner casing, a resilient spring forming one ter- -minal of said battery, a covering for the battery including a cover having a tongue forming another terminal of the battery, springs carried by the coverl and extending upwardly therefrom, an upper casing mem ber mounted for telescopic movement over the inner casing member and normally held,

in spaced relation above the samel by engagement against said springs, and an electric lamp carried by said outer casing and electrically connected to the cover tongue, and a' springfelectrically connected with the lamp adapted for engagement against the spring terminal of the battery.

5.A An egg tester, including a battery inclosing casing, an outer casing telescopically mounted. over the first and normally in spaced relation from the' same by springs, said outer casing being provided with an opening, a cup-shaped reflector positioned in the outer casing to reflect light outwardly vthrough the opening, an electric lamp mounted in the innervend of said reflector, and means operable by the movement of the outer casing toward the battery inclosing casi'ng for closing a circuit through the battery and electric lamp.

6. An egg tester including a battery inclosingcasing, an outer casing telescopically mounted over the rst and normally in spaced relation from the Asame by springs, said outer casing being provided with an opening, a cup-shaped reflector positioned inv the loutercasing to reflect light outwardly through the opening, an electric lamp mounted in the inner end of said reiiector, means operable by the movement of the outer casing toward the batteryinclosing casing for closing a circuitthrough the battery and electric lamp, and means for limiting the relative movement ofthe battery inclosing casing and; outer casing.

7. in egg tester including a battery inclosing casing, an'o'uter casing telescopically mounted over the first and normally held in K. spaced relation froi'the same by springs,-

said outer casing being provided with an opening, a cupshaped reflector positioned Lomme in the louter easing to reflect light outwardly through the opening, an electric lamp mounted in the inner end` of said reflector, means operable by the movement of the outer casing toward the battery inclosing easing for clsing a circuit through the battery and'electrie lamp, and means for limting the relative movement of thebattery inclosing casing and outer casing, said means Copies otthl patent may be obtained forjve cents each, by addressing the ommil inluding a pin Carried bythe battery inl@ closing casing and extending through a slot formed in the outer easing:

In testimony whereof ll ax my signature in presence of two Witnesses. WALTER K. STEBBIN lL. s.]l Witnesses:

A. W. PUTNAM, WM. DOHLQUIST.

f mit Entente Washington, D. C. 

